133531-68-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133531-68-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,5,3 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 133531-68:
(8*1)+(7*3)+(6*3)+(5*5)+(4*3)+(3*1)+(2*6)+(1*8)=107
107 % 10 = 7
So 133531-68-7 is a valid CAS Registry Number.
133531-68-7Relevant articles and documents
2,5-DISUBSTITUTED-1,4-DIAMINOBENZENES
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Paragraph 0053; 0054, (2013/09/26)
Asymmetrical 2,5-disubstituted-1,4-diaminobenzenes are provided, along with a process for forming both symmetrical and asymmetrical 2,5-disubstituted-1,4-diaminobenzenes.